Burner nozzle



March 1932. E 1,849,993

BURNER NOZZLE Filed May 13, 1931 2 Sheets-Sheet l flezjmw ATTORNEYS J. RAVEN NA BURNER NOZZLE March 15, 1932.

Fi'led May 13, 1931 2 Sheets-Sheet 2 JsyZ 7740677724 ATTORNEYAS Patented Mar. 15, 1932 umraa STAT-ES Arr orpiia e P I JOSEPH RAVENNA, oF-rHILADErPn A, rnnnsrryenre, ss eivon or ONE-HALF TO WILLIAM GRAHAM, .13., or Gn AN'rowN, PENNSYLVANIA rurmna NozzLE Applieationfiled May 13,

The present invention relates to an. im-

proved burner nozzle for burning fuel crude.

oil, for the purpose of generating intense heat for various purposes.

: One of the purposes of the invention is to provide a burner nozzle including a casing, a fuel conducting tube in the casing, and a rotor in the casing rotatably mounted on the'conduc'ting tube, the rotor fitting 1n a restricted end of the casing in such a manat the outlet end of the nozzle, acting tomaterially volatilize and vaporize the fuel, facilitating ignition of the mixture adjacent the outlet end of the nozzle. In this manher a highly combustible gas is generated;

. Another purpose is toprovide a fuel conducting tube, about which the rotor operates. revolubly, the rotor having a mixing chamber, while the fuel conducting tube is provided with discs, varying in diameter, and certain of which act to regulate the oil; film on the interior surface of the mixing chain.- ber o the onw il oth o sa d scs act to prevent the flame'from entering the chamber.

It is to be understood that the particulars herein given are in no Way limitative, and that while still keeping within the scope of the invention, any desired modification, ofdetails and proportions may be made in the construction of the appliance according to circumstances,

The invention comprises further features and combination of parts to be hereinafter set forth, shown in the drawings and cla med. In the drawings Figure 1; is a perspective view" of the mprovedburner nozzle constructed in accordance of-the invention, attached to a gun.

Figure 2 is a longitudinal sectional view on line 2-2 of Figurel.

Figure 3 is a cross sectional viewonline 33 of Figure 2.

Figure 1 is'a sectionalview on line H of Figure 2; V

efe ing o he r wi gs, e t fies 193.1; Serial No. 537,136.

ing is provided with a plurality of openings 2, through whichair under pressure passes,

The casing 1 at its head 3 is provided with an annular flange 4, which constitutes a bear# ins a r r 5 t r The end of the casing 1 opposite the head 3 is provided with a restricted portion 6, in which the end 7 of the rotor is positioned, in such 3 11121111181 as toprovide a substantially restricted space 8. j

Connected to the head 3v at 9; is a fuel conducting tube 10 provided with a duct or passage 11. This tube passes through the center of the rotor, there being. a collar 12 onthe tube,fcr cooperation with the shoulder 13- of the rotor to, retain the rotorin position and tohold thesame in its, bearing adjacent the head 3 of the casing. The fuel conduct ing tube passes through a chamber 14, into which the fuel oil passes. The fuel oil passes.

outthejet openings 15 formedin the periph-;

erical: edge of a hollow disc or flange 16 carriediby the fuel conducting tube. Where the fuel conducting tube passes through the chamber 1%, it is provided with a head or an enlargement 17 comprising a plurality of discs or collars 18, with intermediatediscs 19,. In the operation oil under pressure enters the duct or, passage 11 of the tube 10, and it'escapes, through'the jet openings 15 with substantial force, and while the chamber 14 may comparatively fill up withOil, the oil jets. from the openings15 will impinge the interior cylindrical surface of .thejWall of the chamber 14. with sufficient force, tending to breakup the oil. -However whilethe oil may be broken up in thismanner a film of oil collects on. the interior cylindrical surface of the. wall of the chamber 14 .due to the centrifugal action. It'will" be noted that the first two discsor collars nearest the hol low flange 16 areof diiferent diameters. The first one adjacent the hollow "flange 16 is smaller inv diameter than the next collar" or disc 18. Being that the first collaris of smaller diameter han the next, therefore its cylindrical surface being spaced a greater i is threaded to the elbow.

distance from the interior cylindrical surdrical surface of the wall of the chamber. This film of oil gradually feeds out toward the outlet of the chamber 14, and as the film travels in said direction the next collar or disc being of a larger diameter, therefore the space between its cylindrical surface and the wall of the chamber being substantiallynarrower, the film of oil on the interior surface of the wall of the chamber 14 will be sub-- stantially thinned out. The disc or collar 18 next to the outermost disc or collar at the outlet end of the chamber 14 is of the same diameter as the first collar or disc, therefore the space between its cylindrical surfac-eand the wall of the chamber 14 is the same as the space between the first collar or disc 18 and the wall of the chamber, therefore allowing easy passage of the thinner film of oil. However should the film increase at this point, the outermost disc or collar 18 at the outletend of the chamber 14 will again act to cut down or thin out the film of oil. In addition to this function of the outermost disc or collar, it also prevents the flame from entering the chamber. The film of oil'leaves the outlet end of the chamber and is thrown off as a result of the centrifugal action,- while the air from the restricted space 8 discharges in a similar manner, and mixes with and volatilizes the oil as it leaves the outlet end of the chamber 14, and in thismanner producing a combustible burning mixture, the ignition of which generates intense heatfor various purposes. I I

The rotor is provided with a plurality of radial blades 21,'with which the air entering through the openings 2 at the head 3 impinge, hence imparting movement to the rotor, the. rapid rotation of: the rotor acting to agitate the fuel oil in the chamber 14. The head 3 has an extensionQZ, which may support the burner nozzle as shown.

The extension 22 of the head 3 passes through the closed end of an air conductor 24. The closed end 26 of the air conductor is provided with'openings 27 to register with the openings 2, and in this way air under pressure passes into the chamber of the casing 1 wherein the blades 21 of the rotor operate, to impart movement to the rotor.

An elbow 25' isthreaded to the extension 22 to support the burner nozzle casing 1. A

pipe 23 from any suitable oil supply passes through the wall of the air conductor 24 and The elbow 25 acts to clamp the head 3 of the burner'nozzle casing closely in. contact with the closed end 26. I

The invention having been set forth,;what is claimed is:

1. A burner nozzle, comprising a casing provided with an-air chamber with air inlets at one end, permitting air under pressure to enter the chamber, an oil tube for conducting oil under pressure arranged axially with the air chamber, a rotor revoluble on the oil tube with blades with which the air passing through the air chamber impinges for imparting movement to the rotor, said air chamber having a restricted outlet at one end, the rotor extending intov and fitting relatively close within said restricted outlet," the extended part of the rotor having a fuel chamber, said oil tube having a hollow flange provided with radial oiljet openings-located at the inner end ofthe fuel chamber, whereby jets of oil are directed toward the inner surface of the fuel chamber, said oil tube having an extension with means thereon for determining the depth of the oil film collecting on the inner cylindrical surface of the wall of the fuel chamber.

'2. A burner nozzle, comprising acasingi provided with an air chamber with air inlets at one end, permitting air under pressure to enter the chamber, an oil tubefor conducting oil under pressure arranged axially with the air chamber, a rotor revoluble on the 011 tube with blades. with which the air passing through the air chamber-impinges for imparting movement to the rotor, said air chamber having a restricted outlet at one end, the rotor extending into and fitting relatively close within said restricted outlet, the extended part of the rotor having a fuel chamber, said oil tube having a hollow flange provided with radial oil jet openings located at the inner end of the fuel chamber, whereby jets of oil are directed toward the inner surface of the fuel chamber, said oil tube having an extension with means thereon for determining the depth of the oil film collecting on the inner cylindrical surface of the wall of the fuel chamber, and to prevent the flames from into and fitting relatively close'in the restricted air outlet, said rotor having radial blades, with which the air passing through the chamber impinges forimparting-revoluble movement to the rotor, one end of the rotor having a fuel chamber,said oil tube having means located in the fuel ichamber OUT on the oil tube and having one end extending fordirecting ets of oil on the interior cylindrical surface of the fuel chamber, whereby throughthe medium of 'centrifugal'action a film of oil may spread on the interior cylindrical surface of the fuel chamber andfeed toward the outlet end of the fuel chamber, said oil tube having an extension'inthe oil chamber, and means on said extension and within the fuel chamber for determining the depth of the oil film as it feeds to the outlet end of the fuel chamber.

4. In a burner nozzle, the combination with a casing provided with an air chamber with a restricted air outlet at one end and air inlets at the other end, whereby air under pressure may enter the chamber, of an oil tube supported axially with the air chamber for conducting oil under pressure, a rotor supported on the oil tube and having one end extending into and fitting relatively close in the restricted air outlet, said rotor having radial blades, with which the air passing through the chamber impinges for imparting revoluble movement to the rotor, one end of the rotor having a fuel chamber, said oil tube having means located in the fuel chamber, for directing jets of oil on the interior cylindrical surface of the fuel chamber, whereby through the medium of centrifugal action a film of oil may spread on the interior cylindrical surface of the fuel chamber and feed toward the outlet end of the fuel chamber, said oil tube having an extension in the oil chamber, and means on said extension and within the fuel chamber for having a part thereof for determining the depth of the oil film only as it feeds toward the outlet end of the fuel chamber, and means on said extension beyond the first for preventing the flames from entering the fuel chamber.

In testimony whereof he aifixes his signature.

JOSEPH RAVENN A. 

